Answer
(d) 6
Work Step by Step
Factors = Length of Commercial (3 levels) & Frequency (2 levels)
Hence, the total number of treatments is:
3 x 2 = 6
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 11 - Producing Data: Part II Review - Test Yourself - Page 271: 11.11
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